1.单选题- (共10题)
如图所示，关于小球的受力情况，下列说法正确的是
| A．小球受到的合力为零 |
| B．小球受到重力、漏斗壁的支持力、摩擦力及向心力4个力 |
| C．小球受到重力、漏斗壁的支持力及向心力3个力 |
| D．小球受到重力、漏斗壁的支持力2个力 |
| A．图甲中撤掉挡板A的瞬间，小球的加速度竖直向下 |
| B．图乙中固定在竖直面内的圆环内径r=1.6m，小球沿内圆表面过最高点速度可以为2m/s |
| C．图丙中皮带轮上b点的加速度小于a点的加速度 |
| D．图丁中用铁锤水平打击弹簧片后，B球比A球先着地 |
，设A、B、C三点的线速度大小分别为VA、VB、VC，角速度大小分别为ωA、ωB、ωC，则下列关系式正确的是（ ）
| A．VA=V C＜VB | B．ωA=ωB=ωC | C．VA=VC＞VB | D．ωA=ωB＞ωC |
| A．物体做匀速运动，且v2＝v1 |
| B．物体做加速运动，且v2>v1 |
| C．物体做加速运动，且v2<v1 |
| D．物体做减速运动，且v2<v1 |
A. A在B之前150m处
B. A在B之后150m处
C. 正下方4.9m处
D. A在B的正下方且与B的距离随时间而增大
点正上方某一位置
处以速度
水平向左抛出一个小球
，小球恰好能垂直落在斜坡上，运动时间为
，小球
从同一点自由下落，下落至点的时间为
，不计空气阻力，则与的比值为（ ）
A． | B． | C． | D． |
| A．向心力既改变圆周运动物体速度的方向，又改变速度的大小 |
| B．在物体所受力中，只有指向圆心的力才是向心力 |
| C．向心力是按照力的性质命名的 |
| D．做匀速圆周运动的物体所受的合外力即为物体的向心力 |
A．ω= | B．ω= | C．ω= | D．ω= |
| A．小滑块在A点时，FN＞Mg，摩擦力方向向左 |
| B．小滑块在B点时，FN＝Mg，摩擦力方向向右 |
| C．小滑块在C点时，FN＞(M＋m)g，物体与地面无摩擦 |
| D．小滑块在D点时，FN＝(M＋m)g，摩擦力方向向左 |
2.选择题- (共7题)
任务型阅读
The Winner's Guide to Success
Do you know what makes people successful? To find out the answers, an American scholar recently visited some of the most successful people in America. {#blank#}1{#/blank#}
Be responsible for yourself.
Sometimes you may want to blame others for your failure to get ahead. In fact, when you say someone or something outside of yourself is stopping you from making success, you are giving away your own power. {#blank#}2{#/blank#}
Write a plan.
It is very difficult trying to get what you want without a good plan. It is just like trying to drive through strange roads to a city far away. {#blank#}3{#/blank#} Without this “map”, you may waste your time, money and also your energy; while with the “map” you'll enjoy the “trip” and get what you want in the shortest possible time.
{#blank#}4{#/blank#}
Nothing great is easy to get. So you must be ready to work hard — even harder than you have ever done. If you are not willing to pay the price, you won't get anything valuable.
Never give up.
{#blank#}5{#/blank#} When you are doing something, you must tell yourself again and again: Giving up is worse than failure because failure can be the mother of success, but giving up means the death of hope.
A. A good plan is like a map to you. B. It seems to us that everyone knows this. But it is easier said than done. C. Some people achieve success much later in life because they didn't work harder earlier. D. You are saying you have more control over my life than I do. E. Someone else's opinion of you doesn't have to become your reality. F. Be willing to pay the price. G. Here are some keys to success that they give. |
任务型阅读
The Winner's Guide to Success
Do you know what makes people successful? To find out the answers, an American scholar recently visited some of the most successful people in America. {#blank#}1{#/blank#}
Be responsible for yourself.
Sometimes you may want to blame others for your failure to get ahead. In fact, when you say someone or something outside of yourself is stopping you from making success, you are giving away your own power. {#blank#}2{#/blank#}
Write a plan.
It is very difficult trying to get what you want without a good plan. It is just like trying to drive through strange roads to a city far away. {#blank#}3{#/blank#} Without this “map”, you may waste your time, money and also your energy; while with the “map” you'll enjoy the “trip” and get what you want in the shortest possible time.
{#blank#}4{#/blank#}
Nothing great is easy to get. So you must be ready to work hard — even harder than you have ever done. If you are not willing to pay the price, you won't get anything valuable.
Never give up.
{#blank#}5{#/blank#} When you are doing something, you must tell yourself again and again: Giving up is worse than failure because failure can be the mother of success, but giving up means the death of hope.
A. A good plan is like a map to you. B. It seems to us that everyone knows this. But it is easier said than done. C. Some people achieve success much later in life because they didn't work harder earlier. D. You are saying you have more control over my life than I do. E. Someone else's opinion of you doesn't have to become your reality. F. Be willing to pay the price. G. Here are some keys to success that they give. |
3.多选题- (共5题)
| A．小船沿三条不同轨迹渡河的时间相同 |
| B．沿AC轨迹渡河所用时间最短 |
| C．沿AC和AD轨迹小船都是做匀变速运动 |
| D．AD是匀减速运动的轨迹 |
| A．平抛运动是匀变速运动 |
| B．做平抛运动的物体机械能守恒 |
| C．做平抛运动的物体处于完全失重状态 |
| D．做平抛运动的物体，落地时间和落地时的速度只与抛出点的高度有关 |
A. 小球对轨道底端的压力是相同的
B. 小球对轨道底端的压力是不同的，半径小的压力大
C. 通过最低点的速度不同，半径大的速度大
D. 通过最低点时向心加速度是相同的
A．V0= |
B．V0= |
| C．当该路面结冰时，V0要减小 |
| D．汽车在该路面行驶的速度V＞V0时，路面会对车轮产生沿斜面向下的摩擦力 |
4.解答题- (共3题)
(1)当v0=4m/s时，小球的落点离A点的位移；
(2)当v0=8m/s时，小球的落点离A点的位移．
，重力加速度为g。
（1）求小球的角速度；
（2）求小物块B的质量
；（3）当小球速度方向平行于玻璃板ad边时，剪断细线，则小球落地前瞬间的速度多大？
5.实验题- (共1题)
（1）以下实验过程的一些做法，其中合理的有________.
a.安装斜槽轨道，使其末端保持水平
b.每次小球释放的初始位置可以任意选择
c.每次小球应从同一高度由静止释放
d.为描出小球的运动轨迹描绘的点可以用折线连接
（2）实验得到平抛小球的运动轨迹，在轨迹上取一些点，以平抛起点O为坐标原点，测量它们的水平坐标x和竖直坐标y，图2中y-x2图象能说明平抛小球的运动轨迹为抛物线的是_________.
（3）图3是某同学根据实验画出的平抛小球的运动轨迹，O为平抛起点，在轨迹上任取三点A、B、C，测得A、B两点竖直坐标y1为5.0cm、y2为45.0cm，测得A、B两点水平距离Δx为40.0cm，则平抛小球的初速度v0为______m/s，若C点的竖直坐标y3为60.0cm，则小球在C点的速度为vC=______m/s（结果保留两位有效数字，g取10m/s2）。
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【1】题量占比
单选题:(10道)
选择题:(7道)
多选题:(5道)
解答题:(3道)
实验题:(1道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：10
7星难题：0
8星难题：7
9星难题：1